3-(3,4-Dimethoxyphenyl)-N-(4-ethoxyphenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine CAS 890631-73-9
| CAS No. | 890631-73-9 |
| Molecular Formula | C24H26N4O3 |
| Molecular Weight | 418.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3-(3,4-Dimethoxyphenyl)-N-(4-ethoxyphenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine (CAS 890631-73-9) is a high-purity analytical reference standard with the molecular formula C24H26N4O3 and a molecular weight of 418.49 g/mol.
3-(3,4-Dimethoxyphenyl)-N-(4-ethoxyphenyl)-2,5-dimethylpyrazolo[1,5-a]pyrimidin-7-amine (C24H26N4O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C24H26N4O3 |
| Molecular Weight | 418.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Dimethoxyphenyl Standards
- N-(2,5-dimethoxyphenyl)-3-(4-fluoro-2-nitrophenoxy)thiophene-2-carboxamide (CAS 303152-75-2)
- 2-(3,4-Dimethoxyphenyl)-3-hydroxy-5,6,7,8-tetramethoxy-4H-chromen-4-one (CAS 35154-55-3)
- N-(5-(3,5-Dimethoxyphenyl)-1,3,4-oxadiazol-2-yl)-3-(ethylsulfonyl)benzamide (CAS 886919-92-2)
- (2Z)-2-[(2,4-Dimethoxyphenyl)imino]-N-[(furan-2-yl)methyl]-7-hydroxy-2H-chromene-3-carboxamide (CAS 478482-06-3)
- 3-(3,5-Dimethoxyphenyl)-5-(((6-(p-tolyl)pyridazin-3-yl)thio)methyl)-1,2,4-oxadiazole (CAS 1111260-33-3)
- (2Z)-3-[3-(3,4-Dimethoxyphenyl)-1-phenyl-1H-pyrazol-4-yl]-1-(thiophen-2-yl)prop-2-en-1-one (CAS 380457-12-5)
- 2,4-bis(3,4-dimethoxyphenyl)cyclobutane-1,3-dicarboxylic acid (CAS CATO-C4X-22725)
- N-(3,4-dimethoxyphenyl)-2-(4-oxo-7-phenylthieno[3,2-d]pyrimidin-3(4H)-yl)acetamide (CAS 1105207-58-6)
Recommended Standards
- 3-((2-Trityl-2H-tetrazol-5-yl)methyl)phenol (CAS 885278-40-0)
- 4-(1-(4-Methoxyphenyl)-4,5-diphenyl-1H-imidazol-2-yl)phenol (CAS 497061-20-8)
- 2-Butyl-6-(9H-carbazol-9-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione (CAS 2623274-48-4)
- 4-(1H-Tetrazol-5-yl)phenol (CAS 51517-88-5)
- pyrimidine-4,5,6-triamine sulfate hydrate (CAS 6640-23-9)
- Diethyl 2,5-dichlorothieno[3,2-b]thiophene-3,6-dicarboxylate (CAS 1268375-33-2)
- 3-Amino-4,4-dimethylpentanoic Acid (CAS 204191-43-5)
- 2-(Pentafluorophenyl)azetidine Hydrochloride (CAS 1346602-21-8)
- Aldicarb-(<I>N</I>-<I>methyl</I>-<SUP>13</SUP>C,d<SUB>3</SUB> <I>Carbamoyl< /I>-<SUP>13</SUP>C) (CAS 1261170-75-5)
- 2-(2,2-difluoroethoxy)-5-methylaniline,HCl (CAS 1431968-06-7)
- n-(2-Methylphenyl)-2-(3-oxo-1,2,3,4-tetrahydroquinoxalin-2-yl)acetamide (CAS 317814-58-7)
- (4aR,8aR)-2-Phenyl-4,4a-dihydropyrano[3,2-d][1,3]dioxin-8(8aH)-one (CAS 23346-01-2)
- 2,2,4-Trifluoro-6-iodobenzo[d][1,3]dioxole-5-carboxylic acid (CAS 2451905-78-3)
- Vialox Peptide(Pentapeptide-3) (CAS 135679-88-8)
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